build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project basedir="." default="compile" name="project3">
    <property name="debuglevel" value="source,lines,vars"/>
    <property name="src-dir" location="src" />
    <property name="obj-dir" location="bin" />
    <property name="lib-dir" location="lib" />
    <property name="extlib-dir" location="/usr/local/share/java" />

    <property environment="env" />
    <path id="classpath">
        <fileset dir="${lib-dir}" includes="**/*.jar"/>
        <fileset dir="${extlib-dir}" includes="**/*.jar"/>
        <pathelement location="${obj-dir}"/>
    </path>

    <target name="init">
		<mkdir dir="${obj-dir}" />
		<mkdir dir="${lib-dir}" />
    </target>

    <target name="clean">
		<delete dir="${obj-dir}" />
		<delete file="project3a.zip" />
    </target>

    <target name="compile" depends="init">
        <echo message="${ant.project.name}: ${ant.file}"/>
        <javac debug="true" debuglevel="${debuglevel}" srcdir="${src-dir}" destdir="${obj-dir}" includes="edu/ucla/cs/cs144/*.java">
            <classpath refid="classpath"/>
        </javac>
    </target>    

    <target name="run" depends="compile">
        <java classname="edu.ucla.cs.cs144.Indexer" failonerror="true" fork="yes">
            <classpath refid="classpath"/>
            <jvmarg value="-DLUCENE_INDEX=${env.LUCENE_INDEX}"/>
        </java>
    </target>
</project>